Trying to conceive

So I'm 27 yrs old , I already have a beautiful daughter that is 8yrs old , unexpected blessing, got on birth control right after birth , now I am trying to have another , I got off of birth control exactly 1yr ago. Some ppl are telling me bc I was on birth control for so long that it takes up to 2yrs for my body to "be clean" ... is this true or should I go see my obgyn ???